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The rule rescinded on Wednesday allowed manufacturers to count electric vehicles as having artificially high fuel-economy values when calculating fleetwide averages under Corporate Average Fuel Economy (CAFE) standards. Known as the “fuel content factor”, it was designed to incentivise carmakers to produce EVs by effectively crediting them with greater energy savings.
CAFE standards aim to “reduce energy consumption by increasing the fuel economy of cars and light trucks”, according to the US Department of Transportation.
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In February, the Environmental Protection Agency rescinded the “endangerment finding”, which forms the basis of climate regulations in the US, and repealed tailpipe pollution standards.
“American families will suffer long-term harms so that giant auto and oil companies can pocket short-term profits,” said Dan Becker, director of the Centre for Biological Diversity’s Safe Climate Transport Campaign, in a statement on the company’s website.






